Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Nomeie o número total de classificação para a mudança percentual anual de 13.1%.
 ###Tabelas: CREATE TABLE universities_and_colleges_ranked_by_endowment (universities_and_colleges_ranked_by_endowment_id AUTO_INCREMENT PRIMARY KEY, State Rank INT, National Rank INT, Institution VARCHAR, Location VARCHAR, Public or Private VARCHAR, Endowment Funds VARCHAR, Percentage Change YOY VARCHAR) CREATE TABLE results_by_year (results_by_year_id AUTO_INCREMENT PRIMARY KEY, Year INT, Men's Open VARCHAR, Women's Open VARCHAR, Mixed Open VARCHAR, Men's u20 VARCHAR, Women's u20 VARCHAR, Senior Mixed VARCHAR, Men's 30 VARCHAR, Women's 30 VARCHAR, Men's 35 VARCHAR, Women's 35 VARCHAR, Men's 40 VARCHAR, Women's 40 VARCHAR, Men's 45 VARCHAR, Men's 50 VARCHAR) CREATE TABLE "ivy_bridge_quad-core"_22_nm ("ivy_bridge_quad-core"_22_nm_id AUTO_INCREMENT PRIMARY KEY, Model number VARCHAR, sSpec number VARCHAR, Cores VARCHAR, Frequency VARCHAR, Turbo VARCHAR, L2 cache VARCHAR, L3 cache VARCHAR, GPU model VARCHAR, GPU frequency VARCHAR, Socket VARCHAR, I/O bus VARCHAR, Release date VARCHAR, Part number(s) VARCHAR, Release price ( USD ) VARCHAR) CREATE TABLE montreal_canadiens_4_quebec_nordiques_3 (montreal_canadiens_4_quebec_nordiques_3_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Visitor VARCHAR, Score VARCHAR, Home VARCHAR, Record VARCHAR) CREATE TABLE birth_rate (birth_rate_id AUTO_INCREMENT PRIMARY KEY, Year INT, Jewish INT, Muslim INT, Christian INT, Druze INT, Total INT)  
SELECT COUNT National Rank FROM universities_and_colleges_ranked_by_endowment WHERE Percentage Change YOY = 13.1%